Interesting. No, not really. she is about 2 1/2 right now. When she was really little (about 2 months old) she didn’t have any gold, but other than that she has remained the same color. But she isn’t as old as Ladybug. From the picture you sent I can tell Bunny has a lot more black/gold on her...
I had a Jersey giant and Australorp in the same batch, they were the exact same age. They were the same size until much later, when my Jersey Giant seemed to have a growth spurt. Not sure if that is normal, but I wouldn’t worry about them being the same size. Unless my case was unusual.
That’s hard when it is completely unexpected. I felt the same way when I lost my Brahma recently, she was SO sweet, I’m sure I’ll never have one as good as her.